Product Description
A Cold-Formed Primary Steel Frame is a lightweight, cost-effective structural system fabricated from cold-formed steel sections (rolled at room temperature), engineered for low-rise buildings, modular construction, and budget-sensitive projects. Manufactured with high-strength cold-formed steel (Q355, yield strength ≥355MPa) and 8.8-grade high-strength bolts, this product features thin-walled C-section, Z-section, or box-section profiles (beams: 150×50mm-300×100mm; columns: 100×100mm-250×250mm) with high strength-to-weight ratio (30% lighter than hot-rolled steel frames). The frame is assembled via bolted connections, with factory prefabrication rate ≥95% (dimension error ≤±0.5mm) to ensure rapid on-site assembly (construction time reduced by 50% vs. hot-rolled frames). Key features include lightweight design (easy transportation and handling), cost-effectiveness (20-30% lower material cost), and compliance with GB 51022, AISI S100, and EN 1993-1-3 standards. The surface is treated with galvanizing (zinc layer ≥275g/m²) or epoxy coating, providing salt spray resistance ≥1000 hours and adapting to indoor, outdoor, and residential environments. It supports customization of span (6m-18m), column spacing (4m-8m), and building height (1-3 stories). Professional services include load calculation, section optimization, on-site installation training, and quality inspection.

Applications
Cold-Formed Primary Steel Frames are ideal for low-rise, lightweight, and budget-sensitive projects, offering efficiency and cost savings. Certified by GB 51022, AISI S100, and ISO 9001, they meet strict cold-formed steel standards. Typical applications include low-rise residential buildings (single-family homes, townhouses, modular houses), light industrial workshops (small manufacturing plants, assembly facilities), commercial buildings (small retail shops, offices, gas stations), agricultural facilities (greenhouses, barns, storage sheds), and temporary structures (construction sheds, event venues). They are particularly suitable for rural construction, small business expansions, and modular prefabrication, where lightweight and rapid assembly are critical. The minimum order quantity is 5 sets for standard specifications, with customized solutions based on span, height, and load conditions. Competitive pricing and bulk discounts (for orders over 50 sets) enhance cost-effectiveness, while short delivery times (7-15 workdays) support fast-track construction. Customization options include corrosion-resistant upgrades (304 stainless steel), fire-resistant coating (≥1 hour) for commercial buildings, and insulated steel sections for energy efficiency.